Improvement in apparatus for loading carts



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l. BYERLY. Apparatus fur Loading Carts; 140,884.,

Patented July 15 3 AM PHOTO-LITHOGRAPHIL caNflassanivsi-rmciss.)

UNITED STATES PATENT OFFICE.

JACOB BYERLY, OF FREDERICK, MARYLAND.

IMPROVEMENT IN APPARATUS FOR LOADING CARTS.

Specification forming part of Letters Patent No. 140,884, dated July 15,1873; application filed June 26, 1873.

which Letters Patent I am interested by assignment duly recorded in thetransfers of patents, United States Patent Office and I do herebydeclare that the following is a full, clear, and exact description of mysaid invention, reference being had to the accompanying drawings, whichmake part of this specification, and in which- Figure 1 represents aside elevation of a machine embracing my improvements; Fig. 2, a

plan or top view thereof; and Fig. 8, a detached View of one of the carsand its pawl, the dotted lines showing the position it occupies whenbeing dumped.

Reference is hereby made to the Letters Patent hereinbefore referred tofor a description of the general characteristics of the machme. Ishall,therefore, proceed to describe only the lmprovements which I have made.

My lnvention consists, first, in the use of weighted pawls, so locatedand arranged on the frame of the machine as that they engageautomatically with the racks underneath the cars to hold the latter onthe dumping-platform, and, when said cars-are dumped, as that they arereleased therefrom by the act of dumpmg, in the manner and for thepurpose to be hereinafter described. My invention further consists inthe arrangement of the drawingropes in such a manner as that they arecontmuous and have play upon the body of the cart, so that preponderanceof weight in the load on one side or the other may be compensated for bythe shifting of the rope on the car-body, as will be more fully setforth.

A represents. the timbers of the rear frame of the machine, and A theforward timbers thereof, said-timbers serving, in part, asways,

on which run the cars B. The forward frame 18 braced by a horizontaltimber, A, on which the pulley-shaft O is mounted in suitable beari gs.This arrangement of the forward frame of the machine admits of theadjustment of the pulley-shaft 0 toward the rear or front, according tothe character of the earth being dumped.

When the machine is in operation a chain is affixed to one of thetimbers A of the rear frame, and to one of the cross-beams of theforward frame A in order to firmly brace the two together at any desiredangle, and to prevent the machine from being carried over as the loadedcars are run onto the dumpingplatform.

The apparatus may be worked by handpower, or by the moving off of theloaded cart, as fully described in the Letters Patent before referredto; but inasmuch as this constitutes no part of my invention it need notbe further explained.

It has been demonstrated, practically, that instead of separate ropesconnected to either side of the car-body and to the pulley-shaft, asingle continuous rope is much to be preferred, as such an arrangementcompensates for the preponderating weight of the load on one side or theother of the cart. I have, therefore, shown at D such an arrangement ofrope passing from the pulley-shaft 0 around the carbody and back againto said shaft, the said rope passing over pulleys at the rear of the carto adjust itself to draw in a line with the Ways on which it runs,whatever may be the manner in which the car is loaded, and whether therope be coiled evenly on the pulley or not.

Another feature of my improvement is that the cars B are made to dumpupon the forward axles Ethereof as the pivotal point, in-

stead of carrying up with them their trucks, which required much powerand necessitated a strain-upon the machine. this disadvantage, when thecars had been dumped, the wheels thereof would oftentimes not find theirproper position upon the ways, and the. cars would have to be adjustedby hand. By my improvement the'wheels do not leave the ways at all, andthe strain upon the machine is greatly lessened because of having todump the car-bodies only.

Instead of the detents described in the Let= ters Patent cited, whichserve to hold the cars on the dumping-platform, I employ pawls F of Inaddition to such construction, or so weighted as that they engageautomatically with the racks G underneath the cars, and areautomatically released therefrom after the cars have been passed ontothe dumping-platform and while in the act of dumping. This arrangementdispenses with an attendant to pull the ropes actuating the detents,which requires the time not only while the car is being dumped, butafter and until it has passed on the ways below said detents.

with the racks G on the bottom of the cars, arranged and operating asdescribed.

2. The continuous drawing-ropes d, arranged and operating in the mannerand for the purpose described.

3. The arrangement of the several parts composing the cart-loadingapparatus, herein described and shown, viz, the rails A A forming theways on which the wheels of the cars run, the pulley-shaft 0 having thecontinuous ropes, the cars B held and released automatically by theWeighted pawls, the whole operating substantially as and for the purposeset forth.

In testimony whereof I have hereunto signed my name.

J AGOB BYERLY.

Witnesses EDM. F. BROWN, A. H. BIGELOW.

